[SPARK-3118][SQL]add "SHOW TBLPROPERTIES tblname;" and "SHOW COLUMNS (FROM|IN) table_name [(FROM|IN) db_name]" support

JIRA issue: [SPARK-3118] https://issues.apache.org/jira/browse/SPARK-3118

eg:
> SHOW TBLPROPERTIES test;
SHOW TBLPROPERTIES test;	 
numPartitions	0
numFiles	1
transient_lastDdlTime	1407923642
numRows	0
totalSize	82
rawDataSize	0

eg:
> SHOW COLUMNS  in test;
SHOW COLUMNS  in test;
OK
Time taken: 0.304 seconds
id                  
stid                
bo